Adelaide–Mannum Road is a road that runs through the northern Adelaide Hills between the South Australian capital, Adelaide and Mannum on the Murray River.

This article will deal with the entire length of the corridor for sake of completion, as well to avoid confusion between declarations.

Northcote Terrace starts at the intersection of Robe Terrace and Park Road/Mann Road in North Adelaide, about 500 metres away from the beginning of Adelaide's O-Bahn Busway, changes name to North East Road a kilometre later to become a major arterial road that travels, as its name suggests, through the north-eastern suburbs of Adelaide.

[3] It continues through Adelaide's north-east growth corridor, through to the suburban region of Houghton, where it meets in an intersection with Lower North East Road, leading back to Adelaide's more easterly suburbs.

The road was first built in the 1840s to facilitate the growth and development of the towns and settlements along its length.